66065011212213 has 40 divisors (see below), whose sum is σ = 106312870540800. Its totient is φ = 40643285918112.

The previous prime is 66065011212199. The next prime is 66065011212253. The reversal of 66065011212213 is 31221211056066.

66065011212213 is a `hidden beast` number, since 6 + 6 + 0 + 6 + 501 + 12 + 122 + 13 = 666.

It is not a de Polignac number, because 66065011212213 - 2⁹ = 66065011211701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66065011212253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5802033 + ... + 12876086.

It is an arithmetic number, because the mean of its divisors is an integer number (2657821763520).

Almost surely, 2^{66065011212213} is an apocalyptic number.

It is an amenable number.

66065011212213 is a deficient number, since it is larger than the sum of its proper divisors (40247859328587).

66065011212213 is a wasteful number, since it uses less digits than its factorization.

66065011212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681503 (or 18681494 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 66065011212213 its reverse (31221211056066), we get a palindrome (97286222268279).

The spelling of 66065011212213 in words is "sixty-six trillion, sixty-five billion, eleven million, two hundred twelve thousand, two hundred thirteen".